Amphastar Pharmaceuticals (AMPH) Stock Chart & Stock Price History $24.41 -0.09 (-0.37%) As of 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Amphastar Pharmaceuticals Stock Price Performance 5 Day Performance-0.19%1 Month Performance-15.08%3 Month Performance-33.62%6 Month Performance-52.46%Year-To-Date Performance-34.98%1 Year Performance-41.47% Receive AMPH Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Amphastar Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. Email Address AMPH Stock Chart for Wednesday, April, 30, 2025 AMPH Chart by TradingView Amphastar Pharmaceuticals Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization04/29/2025$24.41$24.50+0.37%$24.61$24.19296,382 shs$1.16 billion04/28/2025$24.19$24.41+0.91%$24.47$24.12355,520 shs$1.16 billion04/25/2025$24.07$24.19+0.50%$24.25$23.63235,285 shs$1.15 billion04/24/2025$23.56$24.07+2.16%$24.15$23.35388,155 shs$1.14 billion04/23/2025$23.93$23.56-1.55%$24.69$23.46317,436 shs$1.12 billion04/22/2025$23.50$23.93+1.83%$24.01$23.17524,719 shs$1.14 billion04/21/2025$23.35$23.50+0.64%$23.59$22.84486,466 shs$1.12 billion04/18/2025$23.35$23.35$23.62$23.08735,039 shs$1.11 billion04/17/2025$22.99$23.35+1.57%$23.62$23.08735,039 shs$1.09 billion04/16/2025$23.50$22.99-2.17%$23.74$22.64904,524 shs$1.10 billion Get the Latest News and Ratings for AMPH and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Amphastar Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 04/15/2025$24.42$23.50-3.77%$24.92$23.39779,923 shs$1.12 billion04/14/2025$24.16$24.42+1.08%$24.77$23.94523,510 shs$1.16 billion04/11/2025$23.52$24.16+2.72%$24.22$23.35482,792 shs$1.15 billion04/10/2025$25.23$23.52-6.78%$25.01$22.74840,588 shs$1.12 billion04/09/2025$23.75$25.23+6.23%$25.51$23.361.01 million shs$1.20 billion04/09/2025$23.75$25.23+6.23%$25.51$23.361.01 million shs$1.20 billion04/08/2025$25.00$23.75-5.00%$25.66$23.72972,673 shs$1.13 billion04/08/2025$25.00$23.75-5.00%$25.66$23.72972,673 shs$1.13 billion04/07/2025$26.61$25.00-6.05%$25.95$24.711.29 million shs$1.19 billion04/04/2025$27.24$26.61-2.31%$27.02$26.14699,408 shs$1.27 billion04/03/2025$27.80$27.24-2.01%$28.06$26.88605,671 shs$1.30 billion04/02/2025$28.29$27.80-1.73%$28.29$27.02717,774 shs$1.32 billion04/01/2025$28.99$28.29-2.41%$29.27$28.17785,073 shs$1.35 billion03/31/2025$28.43$28.99+1.97%$29.18$28.01547,881 shs$1.38 billion Related Companies PCVX Stock Chart RYTM Stock Chart PTCT Stock Chart RNA Stock Chart ZLAB Stock Chart RARE Stock Chart ACLX Stock Chart SWTX Stock Chart OGN Stock Chart MRUS Stock Chart Receive AMPH Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Amphastar Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 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